정올 1856 (d+3)

import java.util.Scanner;

public class Jung1856 {

    public static int[] num = new int[2];
    public static int[][] numSquare;

    public static void main(String[] args) {
        numSetting();
        arrySetting();
        dataPrint();
    } // end of main function

    public static void numSetting() {
        Scanner input = new Scanner(System.in);

        for (int i = 0; i < num.length; i++) {
            num[i] = input.nextInt();
        }
        numSquare = new int[num[0]][num[1]];
    } // end of numSetting function

    public static void arrySetting() {
        int element = 0;

        for (int i = 0; i < num[0]; i++) {
            if (i%2 == 0) {
                for (int j = 0; j < num[1]; j++) {
                    element ++;
                    numSquare[i][j] = element;
                }
            }
            else {
                for (int j = num[1]-1; j >= 0; j--) {
                    element ++;
                    numSquare[i][j] = element;
                }
            }
        }
    } // end of numPrintf function

    public static void dataPrint() {

        for (int i = 0; i < num[0]; i++) {
            for (int j = 0; j < num[1]; j++) {
                System.out.printf("%2d", numSquare[i][j]);
                if (j != num[1]-1) {
                    System.out.print(" ");
                }
            }
            System.out.println();
        }
    } // end of dataPrint function
}